curve vs bend

curve and bend both are nouns.

Word	Noun	Adjective	Verb	Adverb
curve	Yes	No	Yes	No
bend	Yes	No	Yes	No

As nouns, curve and bend are synonyms defined as:

curve and bend: curved segment (of a road or river or railroad track etc.)

As nouns, bend is a hyponym of curve; that is, bend is a word with a more specific, narrower meaning than curve:

As verbs, bend is a hypernym of curve; that is, bend is a word with a broader meaning than curve:

Other hypernyms of curve include flex.

As verbs, bend is a hypernym of curve; that is, bend is a word with a broader meaning than curve:

Other hypernyms of curve include flex.

curve (noun)	bend (noun)
a pitch of a baseball that is thrown with spin so that its path curves as it approaches the batter	curved segment (of a road or river or railroad track etc.)
curved segment (of a road or river or railroad track etc.)	diagonal line traversing a shield from the upper right corner to the lower left
the property possessed by the curving of a line or surface	movement that causes the formation of a curve
a line on a graph representing data	an angular or rounded shape made by folding
the trace of a point whose direction of motion changes	a circular segment of a curve

curve (verb)	bend (verb)
form a curl, curve, or kink	cause (an object) to assume a crooked or angular form
turn sharply; change direction abruptly	bend a joint
form an arch or curve	form a curve
bend or cause to bend	change direction
extend in curves and turns	turn from a straight course, fixed direction, or line of interest
	bend one's back forward from the waist on down